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D. J. ANGUS.-

CARBUREIER. APPLICATION FILED Aue.3. IsIe.

Patented May 13, 1919.

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/NVENTH D11. ANGUS. CARBUREIER.

APPLICATION FILED AUG.3. l9l6. 1,303,229. Patented 11115113, 19191 3SHEETS-SHEET 2- Arron/vm',

D. J. ANGUS.4

-cARuRET'ER.

APPLICATION FILED AUG3. |916.

1,3039229. f Patenfed May 13, 1919.

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I `IIIII UNITED STATES PATENT OFFICE.

DONALD J'. AN GUS, 0F INDIANAPOLIS, INDIANA,

A SSIGNOR T0 JOHN W. ESTEBLINE AND DONALD J. ANG-US, DOINQ BSINESS UNDERTHE NAME 0F ESTERLINE 8u ANG-US, 0F INDIANAPOLIS, INDIANA, APARTNERSHIP. l

CABBURETEB.

Specification of Letters Patent.

Patented May 13, 1919.

To all whom it may concern:

Be it known that I, DONALD J. ANGUS, a citizen of the United States,residing at Indianapolis, Marion county, and State of Indiana, haveinvented and discovered certain new and useful Improvements inCarbureters, of which the followingis a speciiication.

In `the operation of internal combustion engines on low-grade fuels,such as lowgrade oils, it is common practice to apply heat to the fuelfor the purpose of Vaporizing it, or to aid in its vaporization. "Anapparatus designed for this purpose forms the subject matter ofl my aplication No. 103,261, filed June 12, 1916, this being referred to merelyas a type of apparatus designed for this purpose, and not to,in any Way,have it understood as limiting my present invention to the constructionof apparatus there shown.

In the use of such type of apparatus, it is` necessary to provide somemeans for starting v I have found, in practice, that volatile fuel, suchas gasolene, may be used to advantage, and my present invention relatesto a method and means for employing gasolene, 0r other volatile fuels,for starting the engine and operating it until a supply of heated orvaporized fuel'has been generate sucient to supply' the requirements Vofthe engine, and to operate or aid in. operating the the engine.

engine whenever the heated or atomized fuel, becomes deficient to sup- Mfrom any' cause, ply the requirements of the engine; and urther, toprovide means whereby, when the supply of the heated oratomized fuelreaches a volume` sufficient to supply the engine, the volatile fuel maybelautomatically cut oif, and again automatically supplied whenever thesuppl of heated or atomized -fuel becomes de cient, all as will behereinafte more fully described and claimed. y

Referring to the aompanying drawings, which are made a part hereo and onwhich similar reference characters indicate similar parts, i Figure 1 isa sectional view through a carburetor of 'special construction designedv to use a heated fuel, in the form of a vapor or liquid, its purposebeing to supply the volatile fuel for starting the engine, and embodymeans for vshutting olf the supply "chamber 11.

fuel'is supplied when the heated fuel is supplied in suiiclent volume tooperate the engine.

Fig. 2 a similar view illustrating a modied form,

Fig. 3 another similar view illustrating another modied form, and

Fig. 4 a'view `illustrating the form of ap paratus as shown in Fig. 1applied toan engine with generator or vaporizer attached.

In said drawings, theportions marked 10 represent the casing of thecarburet-er, 11 the' gasolene chamber, 12 the mixing chamber, 13 a valveforcontrolling the flow of the gasolene to the lmixing chamber, 14; athermostat for operating said valve, 4:0 the engine, 41 the intakemanifold, 42 the vaporizer, and 43 the exhaust pipe.

A general description of the apparatus will describe its constructionand define i the invention, the structure of the parts themselves beinglargely of common and well known types.

Referring to the form shown in Fig. l1. The supply of gasolene inchamber 11 is regulated by a valve 15 controlled by a float 16 in theusual and well known manner. The atomizer nozzle 17 projects into themixing Vchamber 12 and itsoutlet is controlled by a valve 13. The airinlet is controlled by valve 18 on a stem 19, which also `carries avalve 2() controlling theport between the mixing chamber and the fuelchamber 21, which is adapted to beconnected `with the heatedffuel supplyby means of a screwthreaded neck piece 22 adapted to be connected withthe heated fuel'supply pipe 45.

The valve 13 is mounted on a support 14 of a material on its lower sideadapted to be readily expanded by the heat of the fuel, causing thesupport to turn u wardl seat the valve 13, and shut off t e supply ofvolatile fuel.

y and It will thus be seen that the chamber 21 is connected to theheated pipe 45. The engine is manner by means' of the volatile fuel inAs soon as sufficient heated fuel supply, as by valve 13 will be closed,the supply of volatile fuel shut off and the en V its supply of fuelfrom chamber 21, the suction causing valves 18 and 20 to intermitto heatthe support'14,.

started 1n the usual l flexible diaphragmv 31,

tcntly open for admitting the airand the fuel to said mixing chamber.Should the supply of heated 'fuel become deficient, support 14 will cooland the support vwill cause valve 13 to fall and allow volatile fuel tobe supplied in the regular way, or until sufficient heated fuel isavailable to again supply the needs of the engine. Heat from thequantityof fuel then coming into the chamber 21 will automatically close valve13, and the engine will run on the fuel coming from the heater.

The structure shown in Fig. 2 is substantially the Same as that shown inFig. l, except that the valve 30 for controlling the flow of thevolatile fuel is operated by a actuated by the pressure of the heatedfuel; otherwise the operation is the same as that of the constructionillustrated in Fig. 1. In the construction shown in Fig. 3, the valve 32for controlling the flow of volatile fuel to the mixing chamber isconnected through a bell-crank lever 33 and connecting` rod 34 to anoperating device. (not shown) on the dash or convenient to the driver.

Fig. 4, as will be readily seen, shows lan apparatus wherein thevaporizer or generator forming the subject matter of my applicationabove mentioned is combined with the particular carbureter shown in Fig.l to supply fuel to the engine. The heat is supplied to the vaporizer 42by exhaust gases coming through pipe 43 `and passing out by pipe 44while the vapor or heated fuel passes to chamber 21 by the pipe 45.

It will be understood, however, that the particular type of heater, orvaporizer, or carbureter, 1s not essential, but that my inventioncontemplates any form of either that will provide means whereby avolatile fuel is supplied by the absence, or deficiency in supply, ofheated fuel, and cut ofi by a S11-fliciency inthe supply of said heatedfuel.

cooling of said Having thus fully described my said invention, what Iclaim las new, and desire to secure b Letters Patent, is:

1.. A car ureter for internal combustion engines, comprising a Casinroviding a mixing chamber, 'a liquid fue c amber, and a chamber adaptedto receive heated gaseous fuel, means for projecting liquid fuel intothe mixing chamber in the form of spray, a thermostatic control for saidspraying means located in the chamber for the heated gaseous fuel, avalve controlling the admission of air into the mixing chamber andoperable through the suction of the engine, and a valve controlling theadmission of the heated gaseous fuel into the mixing chamber, said lastnamed valve connected to and operated by the air intake controllingvalve, substantially as set forth.

2. The combination with an internal combustion engine of a. carburetertherefor comprising a casing providing a mixing chamber, a liquid fuelchamber, and a chamber adapted to receive heated gaseous fuel, means forprojecting liquid fuel into the mixing chamber in the form of s ray, athermostatic control therefor located in the chamber for receiving theheated gaseous fuel, a common control. for regulating the admission ofair and the heated gaseous fuel into the mixing chamber, a fuelvaporizer connected to receive theheated exhaust gases from the engine,and a communication between said vaporizer and the chamber for heatedgases in the casing, Substantially as set forth.

In witness whereof I have hereunto set my hand and .seal atIndianapolis, Indiana, this 24th day of July, A. D. nineteen hundredandaixteen.

. DONALD J. ANGUS. [1.. a] y Witness:

A. Elon.

